| /* Copyright (C) 2008-2022 Free Software Foundation, Inc. |
| Contributed by Richard Henderson <rth@redhat.com>. |
| |
| This file is part of the GNU Transactional Memory Library (libitm). |
| |
| Libitm is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| Libitm is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* The following are internal implementation functions and definitions. |
| To distinguish them from those defined by the Intel ABI, they all |
| begin with GTM/gtm. */ |
| |
| #ifndef COMMON_H |
| #define COMMON_H 1 |
| |
| #define UNUSED __attribute__((unused)) |
| #define ALWAYS_INLINE __attribute__((always_inline)) |
| #ifdef HAVE_ATTRIBUTE_VISIBILITY |
| # define HIDDEN __attribute__((visibility("hidden"))) |
| #else |
| # define HIDDEN |
| #endif |
| |
| #define likely(X) __builtin_expect((X) != 0, 1) |
| #define unlikely(X) __builtin_expect((X), 0) |
| |
| namespace GTM HIDDEN { |
| |
| // Locally defined protected allocation functions. |
| // |
| // To avoid dependency on libstdc++ new/delete, as well as to not |
| // interfere with the wrapping of the global new/delete we wrap for |
| // the user in alloc_cpp.cc, use class-local versions that defer |
| // to malloc/free. Recall that operator new/delete does not go through |
| // normal lookup and so we cannot simply inject a version into the |
| // GTM namespace. |
| // If separate_cl is true, the allocator will try to return memory that is on |
| // cache lines that are not shared with any object used by another thread. |
| extern void * xmalloc (size_t s, bool separate_cl = false) |
| __attribute__((malloc, nothrow)); |
| extern void * xcalloc (size_t s, bool separate_cl = false) |
| __attribute__((malloc, nothrow)); |
| extern void * xrealloc (void *p, size_t s, bool separate_cl = false) |
| __attribute__((malloc, nothrow)); |
| |
| } // namespace GTM |
| |
| |
| #endif // COMMON_H |